Makkari, Yo-Yo, and Quicksilver are way above everyone else. Captain Marvel's in-flight combat speed is also pretty high and obviously her straight line flight speed is top notch, but her actual "combat" speed is nothing super special.
Makkari. Thor, Ikaris, and Captain Marvel don't fight anywhere near as fast as they travel consistently. Makkari is very consistently fast and she's already faster in combat than Ikaris (although Ikaris can tag her eventually).